Reliability and validity measure of the international physical activity questionnaire short lithuanian version (IPAQ-LT)

The study involved 92 18 - 69 year old subjects, 63 women and 29 men. In our work we used the direct (accelerometer) and indirect (IPAQ-LT short version of the questionnaire) methods to assess the total weekly physical activity and compare the findings with each other. Each study participant the first International physical activity questionnaire short Lithuanian version filled when completed physical activity estimation with accelerometer (physical activity was remembered of the last week - the first case of the questionnaires filling and another - after a week when physical activity estimation was completed with accelerometer (was asked „to remember“ physical activity that was done for the last week - the second case of the questionnaires filling). According to the IPAQ-LT short version the first and second questionnaire filling cases received the total weekly physical activity data between the first and second questionnaire filling cases exists a moderate correlation (rho=0,531, p=0,01). Evaluating the data of accelerometer and comparing them with the questionnaire data (the first and second guestionnaire filling cases of the total weekly physical activity) between the accelerometer and the the first guestionnaires filling case there is a small correlation (r=0,270, p=0,009), but between the second guestionnaires filling case - a very small (negligible) correliation (r=0,057, p=0,591). The study results suggest that the majority of volunteers in the study of their physical activity tended to be overestimated. The object of work - IPAQ-LT short version questionnaire and the reliability and validity evaluation of it. The aim of work - to measure the reliability and validity of the International physical activity questionnaire short Lithuanian version (IPAQ-LT). The objectives of work: 1. To estimate the reliability of the International physical activity questionnaire short Lithuanian version (IPAQ-LT). 2. To estimate the validity of the International physical activity questionnaire short Lithuanian version (IPAQ-LT). Conclusions. 1. Reliability and validity of the Lithuanian short version of The International Questionnaire of Physical Activity was determined: a) the average correlative relation between the two IPAQ-LT questionnaire short version filling cases was defined; b) between the accelerometry data and first case of questionnaire filling – weak correlative relation and between the accelerometry data and second case of questionnaire filling, respectively - very weak correlative relation. It was also determined during the study that: 1.1 the data, received in the case of first or second questionnaire filling of the short IPAQ-LT version, correlate during a very intensive physical activity, moderate physical activity and during walking - normal rate of reliability of intensive physical activity was defined as well as weak rate of reliability of moderate physical activity and walking was defined; 1.2 there is a weak correlative relation between the first and second questionnaire filling cases results during the analysis of the average time of the workday spent for a sedentary activity. On the average, during the case of the first questionnaire filling, respondents indicated that they were sitting for 396 min., and during the case of the second questionnaire filling - 394 min. (average time of sedentary activity a day of 7 days); 1.3 there is a meaningful difference in all levels of physical activity between subjective (self-assessment and IPAQ-LT questionnaire) and objective assessment of total physical activity of the week with the method of accelerometry; 1.4 age, gender, BMI, health state and social status didn’t have any influence on total level of physical activity of the week in case of the first case of IPAQ-LT questionnaire filling